Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual é a 250 cc com um ano maior que 1984?
 ###Tabelas: CREATE TABLE winners_of_the_yugoslavian_motorcycle_grand_prix (winners_of_the_yugoslavian_motorcycle_grand_prix_id AUTO_INCREMENT PRIMARY KEY, Year INT, Track VARCHAR, 250 cc VARCHAR, 500 cc VARCHAR, Report VARCHAR) CREATE TABLE commanders-in-chief___commanders (commanders-in-chief___commanders_id AUTO_INCREMENT PRIMARY KEY, Name VARCHAR, Branch VARCHAR, Term began VARCHAR, Term ended VARCHAR, Time in office VARCHAR) CREATE TABLE current_clubs_2014_season (current_clubs_2014_season_id AUTO_INCREMENT PRIMARY KEY, Club VARCHAR, Position in 2013 VARCHAR, First season INT, First season of current spell INT, Number of seasons in Superettan INT, Number of seasons in second tier VARCHAR) CREATE TABLE missed_opportunities (missed_opportunities_id AUTO_INCREMENT PRIMARY KEY, Player VARCHAR, Team VARCHAR, Opponent VARCHAR, Year INT, Score VARCHAR, Outcome VARCHAR) CREATE TABLE personnel_and_kits (personnel_and_kits_id AUTO_INCREMENT PRIMARY KEY, Team VARCHAR, Manager 1 VARCHAR, Captain VARCHAR, Kit manufacturer VARCHAR, Shirt sponsor VARCHAR)  
SELECT 250 cc FROM winners_of_the_yugoslavian_motorcycle_grand_prix WHERE Year > 1984